Used as a key intermediate in the synthesis of pharmaceutical compounds, particularly in the development of kinase inhibitors for cancer treatment. It serves as a building block in medicinal chemistry due to its ability to form stable heterocyclic structures that interact with biological targets. Commonly employed in the preparation of active pharmaceutical ingredients (APIs) targeting inflammatory diseases, neurological disorders, and certain viral infections. Its amine and chloro functional groups allow for easy modification, enabling the creation of diverse compound libraries for drug discovery and structure-activity relationship (SAR) studies.